Home / 27,876.88-38,469.96-15,301.36

Finding the Fourth Proportional to 27,876.88, 38,469.96 and 15,301.36

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Solution

The fourth proportional to 27,876.88, 38,469.96 and 15,301.36 is: 21,115.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,876.88 : 38,469.96 = 15,301.36 : x
  2. Step 2: Convert to fraction form
    27,876.88/38,469.96 = 15,301.36/x
  3. Step 3: Cross multiply
    27,876.88x = 38,469.96 × 15,301.36
  4. Step 4: Simplify right side
    27,876.88x = 588,642,707.15
  5. Step 5: Solve for x
    x = 588,642,707.15/27,876.88
  6. Step 6: Final answer
    x = 21,115.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.